ASTROSAT CZTI

Data Quality Report

Orbit 12418

Creation date: 2024-06-27T16:27:00.913844
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A04_201T01_9000001844_12418cztM0_level2.evt modeM0/AS1A04_201T01_9000001844_12418cztM0_level2_quad_clean.evt
Size (bytes)508,351,68096,972,480
Size484.8 MB 92.5 MB
Events in quadrant A3,721,803623,530
Events in quadrant B4,406,210645,339
Events in quadrant C3,085,568628,652
Events in quadrant D3,741,908586,976

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151923
B0172542
C0134522
D0155002

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6484330.508945%
B64844506.940160%
C6484150.231339%
D64841091.681061%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7825 6486 0 0 0.00% 0.00%
B 7825 6485 327 327 4.18% 5.04%
C 7825 6486 1 1 0.01% 0.02%
D 7825 6486 94 94 1.20% 1.45%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 12 189 185443 1132.09 808 793 163.1
A 1 162 123684 753.44 808 793 163.1
A 13 251 109971 669.37 808 793 163.1
B 4 239 1159041 7917.2 784 765 146.3
B 3 64 75164 508.54 784 765 146.3
B 0 187 59605 402.19 784 765 146.3
C 15 208 25623 137.71 784 790 180.3
C 13 61 5877 28.21 784 790 180.3
C 1 16 1925 6.29 784 790 180.3
D 1 52 566598 3060.66 769 749 184.9
D 2 14 113017 607.25 769 749 184.9
D 8 195 83726 448.82 769 749 184.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter